AMD Ryzen 5 PRO 5655GE vs Intel Core i9-11900KF Comparison

The Intel Core i9-11900KF and AMD Ryzen 5 PRO 5655GE are both desktop processors, but they serve very different performance tiers. Benchmark data shows a decisive overall victory for the Intel part, which wins all 17 head-to-head comparisons. However, the AMD chip is a newer, more efficient design with integrated graphics, making the choice between them less about raw speed and more about platform priorities. The i9-11900KF posts an average benchmark score of 26212, while the Ryzen 5 PRO 5655GE is close behind at 25880, but the per-test deltas reveal where each part’s strengths truly lie.

Where Each One Wins

The Intel Core i9-11900KF wins every single benchmark in the head-to-head comparison, but the magnitude of those wins tells the real story. In heavily threaded workloads, the i9’s 8-core, 16-thread configuration dominates. The largest margin comes in PassMark physics, where the Intel part scores 1034 against AMD’s 648, a 59.6% advantage. Random string sorting also heavily favors Intel, with a 57.3% lead (37383 vs 23769). These are workloads that scale with core count and raw memory bandwidth, areas where the i9’s extra two cores and higher clock speeds pay off.

The AMD Ryzen 5 PRO 5655GE, despite its 0 wins, is not without merit. Its 65W TDP and 7nm process node make it a far more power-conscious choice, and it includes Radeon Vega 7 integrated graphics, which the Intel part lacks entirely. In single-threaded PassMark tests, the gap narrows considerably: Intel scores 3527 vs AMD’s 3240, a delta of just 8.9%. Similarly, data encryption shows only a 7.7% difference (15623 vs 14509), suggesting that for lightly threaded or encryption-heavy tasks, the AMD chip is competitive. The AMD part also supports ECC memory, a feature absent from the Intel chip, making it suitable for certain workstation or server-adjacent builds. For users who prioritize lower power draw, onboard graphics, or ECC support over peak multi-core performance, the Ryzen 5 PRO 5655GE holds a clear value proposition.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i9-11900KF is built on Rocket Lake architecture, using a 14nm process node manufactured by Intel. It features 8 cores and 16 threads, with a base clock of 3.50 GHz and a boost clock of 5.30 GHz. The chip has a 125W TDP and uses the Intel Socket 1200. Its cache layout includes 80 KB of L1 per core, 512 KB of L2 per core, and 16 MB of shared L3 cache. It supports DDR4 memory in a dual-channel configuration with 51.2 GB/s bandwidth, and provides PCIe Gen 4 with 20 lanes. The i9-11900KF has no integrated graphics, which is why the “KF” suffix indicates a disabled GPU. It is an unlocked multiplier part, meaning overclocking is supported, and it was released in March 2021 with a launch MSRP of $513.

In contrast, the AMD Ryzen 5 PRO 5655GE is a Zen 3 part, codenamed Cezanne, built on a 7nm process by TSMC. It has 6 cores and 12 threads, with a base clock of 3.40 GHz and a boost clock of 4.40 GHz. Its TDP is just 65W, and it fits the AMD Socket AM4. The cache structure includes 64 KB of L1 per core, 512 KB of L2 per core, and 16 MB of L3. The AMD chip also supports DDR4 dual-channel memory at 51.2 GB/s, but its PCIe implementation is Gen 3 with 16 lanes. It integrates Radeon Vega 7 graphics, which is a major differentiator. The Ryzen part has a locked multiplier, so overclocking is not supported. It was released in May 2024 and remains an active production part. Notably, the AMD chip has 10,700 million transistors on a 180 mm² die, while the Intel chip uses a 276 mm² die with transistor count not listed.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core i9-11900KF boosts up to 5.30 GHz, while the AMD Ryzen 5 PRO 5655GE reaches a maximum of 4.40 GHz.

Q: Do either of these CPUs include integrated graphics?

A: Yes, the AMD Ryzen 5 PRO 5655GE includes Radeon Vega 7 integrated graphics. The Intel Core i9-11900KF has no integrated graphics, as indicated by the “KF” suffix.

Q: What is the TDP difference between the two?

A: The Intel chip has a TDP of 125W, while the AMD chip has a significantly lower TDP of 65W.

Q: Which processor supports ECC memory?

A: The AMD Ryzen 5 PRO 5655GE supports ECC memory. The Intel Core i9-11900KF does not.

Q: In which benchmark does the Intel chip show its smallest lead?

A: The smallest lead is in PassMark data encryption, where the Intel part scores 15623 versus AMD’s 14509, a 7.7% difference.

Q: Are both processors unlocked for overclocking?

A: No. The Intel Core i9-11900KF has an unlocked multiplier, while the AMD Ryzen 5 PRO 5655GE is locked.

Specification Differences

| Specification | Intel Core i9-11900KF | AMD Ryzen 5 PRO 5655GE |

|----------------|----------------------|------------------------|

| Cores | 8 | 6 |

| Threads | 16 | 12 |

| Base Clock | 3.50 GHz | 3.40 GHz |

| Boost Clock | 5.30 GHz | 4.40 GHz |

| TDP | 125W | 65W |

| Socket | Intel Socket 1200 | AMD Socket AM4 |

| Process Node | 14 nm | 7 nm |

| Foundry | Intel | TSMC |

| Die Size | 276 mm² | 180 mm² |

| Transistors | Not listed | 10,700 million |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| PCIe Version | Gen 4, 20 Lanes | Gen 3, 16 Lanes |

| Integrated Graphics | None | Radeon Vega 7 |

| ECC Memory | No | Yes |

| Multiplier | Unlocked | Locked |

| Release Date | 2021-03-15 | 2024-05-06 |

| Production Status | End-of-life | Active |

| Launch MSRP | $513 | Not listed |

Head-to-Head Benchmarks

The benchmark results are uniformly in favor of the Intel Core i9-11900KF, but the margins vary significantly by workload type. In Cinebench tests, the Intel chip shows a consistent and commanding lead. For Cinebench R15 multicore, Intel scores 2100 against AMD’s 1562, a 34.4% advantage. The single-core R15 test shows a nearly identical 34.5% lead (296 vs 220). This pattern repeats in Cinebench R20, where multicore scores are 8751 vs 6511 (34.4% delta), and single-core is 1235 vs 918 (34.5% delta). The most recent Cinebench R23 results reinforce this: multicore shows 20838 vs 15504, and single-core shows 2941 vs 2188, both with a 34.4% delta.

Moving to PassMark tests, the Intel chip’s dominance expands in certain areas. The most extreme difference is in physics, where Intel’s 1034 score towers over AMD’s 648, a 59.6% gap. Random string sorting also shows a massive 57.3% lead (37383 vs 23769). Extended instructions favor Intel by 44.5% (22703 vs 15714), and data compression shows a 42.8% advantage (325688 vs 228037). Floating point math is 37.8% higher for Intel (52640 vs 38204). In integer math, Intel leads by 31.7% (89023 vs 67582), and find prime numbers shows a 34.7% gap (66 vs 49). The PassMark multithread score is 24708 vs 18057, a 36.8% lead for Intel.

Where the AMD chip closes the gap is in single-threaded and encryption workloads. PassMark single-thread shows Intel at 3527 versus AMD’s 3240, a modest 8.9% difference. Data encryption is the closest race, with Intel’s 15623 beating AMD’s 14509 by just 7.7%. These results indicate that while the Intel part is categorically faster, the AMD Ryzen 5 PRO 5655GE is not a slouch in lightly threaded tasks. Given that the AMD chip consumes roughly half the power (65W vs 125W) and includes integrated graphics, its performance per watt in single-threaded scenarios is competitive. The data overall, however, places the Intel Core i9-11900KF as the clear performance king, with the AMD part offering a more efficient, feature-rich alternative for users who don’t need maximum multi-core throughput.